Omron CQM1 User Manual

52
Word Allocation Section 4-1
Relationship Between
Master/Expansion Masters
and Slave Address
The Slave addresses corresponding (i.e. controlled by) each Master/Expan-
sion Master are shown in the table below.
The Slave addresses corresponding to each Master and Expansion Master
Unit number are fixed.
Note 1. Addresses n,m,j,k are the start addresses allocated in CQM1H/CQM1 for
the Master or Expansion Master, as shown above.
2. Expansion Master Unit 2 is for 8-/16-point Slaves only. Do not set 4-point
Slave addresses between #24 and #27.
3. If the number of I/O words for the Master and Expansion Master is set to 1
word (16 points), the corresponding Slave address (n+1), (m+1), (j+1),
(k+1) (the shaded areas) are invalid. An error results if these settings are
incorrect. In particular, if the Master output is set to 1 word but the output
Slave address is mistakenly set between #4 and #7, the Slave outputs the
same data as the n address. All Slave outputs corresponding to the Expan-
sion Master are OFF (0).
4. The following bits are allocated as Master and Expansion Master address-
es and cannot be used by the Slaves.
Input bits: always OFF
Output bits: can be used as work bits
Master/
Expansion
Master
I/O type Word 4-point Slave 8-point Slave 16-point Slave
Address Bit Address Bit Address Bit
Master Output n #0 00 to 03 #0 00 to 07 #0 00 to 15
#1 04 to 07
#2 08 to 11 #2 08 to 15
#3 12 to 15
n+1 #4 00 to 03 #4 00 to 07 #4 00 to 15
#5 04 to 07
#6 08 to 11 #6 08 to 15
#7 12 to 15
Input m #8 00 to 03 #8 00 to 07 #8 00 to 15
#9 04 to 07
#10 08 to 11 #10 08 to 15
#11 12 to 15
m+1 #12 00 to 03 #12 00 to 07 #12 00 to 15
#13 04 to 07
#14 08 to 11 #14 08 to 15
#15 12 to 15
Expansion Mas-
ter, Unit 1
Input
(Output)
j #16 00 to 03 #16 00 to 07 #16 00 to 15
#17 04 to 07
#18 08 to 11 #18 08 to 15
#19 12 to 15
j+1 #20 00 to 03 #20 00 to 07 #20 00 to 15
#21 04 to 07
#22 08 to 11 #22 08 to 15
#23 12 to 15
Expansion Mas-
ter, Unit 2
Input
(Output)
k Expansion Master Unit 2 is
for 8-/16-point Slaves only.
Do not set 4-point Slaves
between #24 and #27.
#24 00 to 07 #24 00 to 15
#25 08 to 15
k+1 #26 00 to 07 #26 00 to 15
#27 08 to 15

Omron CQM1 Specifications

General

Model	CQM1
I/O Capacity	Up to 256 I/O points
Programming Language	Ladder Logic
Timer/Counter	128 timers/counters
Operating Temperature	0 to 55°C
Humidity	10 to 90% RH (non-condensing)
Power Supply	24 VDC or 100-240 VAC
Communication Ports	RS-232C
Memory Capacity	3.2K words
Instruction Set	Basic and advanced instructions
Memory	RAM (battery-backed)
Program Memory	3.2K words
Storage Temperature	-20 to 75°C